The most I ever drove a 535 on a test drive was 15 minutes. I encountered maybe 20% of the driving conditions I normally would. You just have to try to extrapolate that over the rest of the cars experience. It's hard to do so.

One other thing I found was that there was a lot of variation in the driving experience among early cars. I ended up buying a CPO car that was the same price I would have spent new but with more warranty and many more features. Turns out that was a mistake.